KABUL, Afghanistan – At least four gunmen stormed a major international hotel complex in the Afghan capital Saturday, breaching security cordons and touching off gun battles with special forces and police, officials said.

There were no immediate reports of casualties from the clashes at the Inter-Continental Hotel, one of the city’s main sites for foreign visitors, envoys and other guests. The attack was the latest strike on a high-profile target in Kabul, deepening worries about the ability of militants to strike at the heart of Afghanistan’s leadership.

The spokesman for Afghanistan’s interior ministry, Najib Danish, said the number of casualties are not yet clear. But at least one of the attackers was killed as security forces conducted floor-by-floor “clearing operations,” he said.

There was no immediate claim of responsibility. The Taliban and Islamic State have each waged attacks in the past against diplomatic targets and other sites in Kabul.

In 2011, Taliban suicide bombers and gunman attacked the hilltop Inter-Continental in a siege that lasted more than five hours. At least 11 people were killed, including hotel staff and visitors.

The Washington Post’s Brian Murphy in Washington contributed to this report.

More in Nation World News

Former President Barack Obama took a public step back into the electoral arena on Wednesday, issuing a slate of 81 endorsements for Democrats running in the 2018 elections and giving his stamp of approval to more than a dozen veterans of his administration and election campaigns who are seeking office in their own right.

A bridge on a main highway between Italy and France collapsed Tuesday in the Italian city of Genoa during a sudden, violent storm, sending vehicles plunging 80 meters (262 feet) into a heap of rubble below.